Armchair



FIG. 1 is a front elevational view of an armchair;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a right elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front, left, top perspective view thereof.

The broken line showing in FIGS. 1-7 is included for the purpose of illustrating environment and forms no part of the claimed design. 

An ornamental design for an armchair, as shown and described. 